It's a sports event,the sum is much bigger than the parts that make it up.Boxing does occasionally capture the wider public imagination,not a great deal of major sport on elsewhere,early summer ,big arena,despite the hype to generally good British guys both great boxers Sat night what's not to enjoy?
Also if these 2 fighters were best friends,hugging and kissing whenever they met,you would not be able to sell the fight in such a big venue(Wembley) the dislike shown to wards each other, is a big selling angle, add to that the controversy of the first fight, wow. Do you. Need to ask.